Request Details

Route
/api_simple GET
Timestamp
Sep 22, 2026 10:38 PM
Duration
13.04 ms
Status
204
Response Size
1.2 KB
Error
No

Performance Breakdown

Database
21.3% (1 query)
View Rendering
45.1%
Application Logic
33.6%
Other Operations
0.0%
Total Operations
7
Slowest Operation
35.0 ms

Request Trace

How to read this

Each row is a layer of your stack. Many short Database bars means N+1 queries — fix with includes(). A wide Action bar with little Database time means slow Ruby code. A wide View bar usually means a partial rendered in a loop.

Action
View
Database
Other
Action
View
Database
0.0ms 38.8ms 77.6ms 116.4ms 155.2ms

Operations

How to use this

Sort by Impact to find your biggest wins. Click any row for details and optimisation suggestions. The same SQL appearing multiple times is an N+1 — fix with includes(). A single operation above 50% impact is your highest priority.

Operation Duration Impact Timeline Actions
posts/show 35 ms 268.4%
users/index 35 ms 268.4%
home#api_simple 13 ms 100.0%
home#api_simple 13 ms 100.0%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 33 ms 253.1%
home#api_simple 13 ms 100.0%
home#api_simple 13 ms 100.0%